Roofing compound.



UNITED STATES PATENT orr on JUIJIUS RACZ, OF DETROIT, MICHIGAN, ASSIGNORTO PERFECTION SHINGLE & ROOFING COMPANY, OF DETROIT, MICHIGAN, ACORPORATION i-OF MICHIGAN.

ROOFING COMPOUND.

No Drawing.

To all whom it may concern:

Be it known that I, JULIUs RACZ, a subject of the Emperor ofAustria-Hungary, residing at Detroit, in the county of Wayne and Stateof Michigan, have invented certain new and useful Improvements inRoofing Compounds, of which the following is a order to reduce to aminimum any tendency of the same to become brittle, fragile, and readilychipped away or broken by the wear and tear of handling and commercialuse.

In order that those skilled in the art to which this invention relatesmay'produce thesame, the preferred proportions and ingredients of thecompound are as' follows: 35 parts Japan drier, 35 parts iron filings,15 parts ashes, 8 parts charcoal, 10 parts to .20 parts sand.

vThe above substances and materials are mixed in substantially theproportions specified and are then permitted to ripen or de velop untilthey are thoroughly and eifectively combined. The mixture is then rolledout upon or otherwise applied to a layer or rip of paper'or equivalentmaterial and after going through a drying process the constitutents ofthe compound not only become united but form with the paper apractically homogeneous product by virtue of Specification of LettersPatent.

Application filed January 15, 1912. Ser'iaI No. 671,221.

the fact that the compound closely adheres to the paper and penetratesthe same. This product may be employed in many different ways inbuilding operations, as well as for other purposes, and is light,elastic, nonfrangible, unaffected by changes in weather conditions,iswaterproof and fireproof and cheap as a commercial article. In fact ithas been found that the elasticity of the product increases with age.

TheJapan drier serves to firmly unite the Patented Feb.17, 1914..

iron, ashes, and sand, the mixture of these four ingredients producingan elastic and flexible compound; the iron affords a requisite hardness,the sand afltords a body, and the charcoal accelerates the drying of thematerials in the manufacturing process.

For making shingles this product aforesaid has been found exceptionallyadvantageous as compared with slate, and its fire proof qualities renderit highly desirable to use in connection with fire-proof buildingconstruction.

The paper carrier when combined with the substances and materialsrecited is so united therewith by the chemical action of the elements ofthe roduct that said aper cannot be separate from the ingre 'entsmentioned.

Having thus described the invention what is claimed as new is:

A roofing compound consisting of Japan drier 35 parts, iron filings 35parts, ashes 15 parts, charcoal B parts, and sand 10 to 20 parts, saidcompound being capable of adhering to and penetrating'paper.

In testimony whereof I aflix my signature in presenceof two witnesses.

' JULIUS RACZ. Witnesses:

H. R. WUNDERLICH, FRANK HORALEKE.

